C# 控制asp.net网站自动更新数据源码

下面的代码内容是关于C# 控制asp.net网站自动更新数据的代码，应该是对码农们也有好处。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Threading;

namespace OKGO.Web
{
public class TestTimer
{

static int n = 0;

           public static Timer GlobalTimer = new Timer(new 

           TimerCallback(GlobalTimer_ToDo), null, Timeout.Infinite, Timeout.Infinite);

     GlobalTimer.Interval = 10;
             GlobalTimer.Enabled = true;

     static void GlobalTimer_ToDo(object obj)
     {
         n = n + 1;
        if (n == 2)
         {
             System.Data.SqlClient.SqlDataReader dataReader = null;
             try
             {
                  System.IO.StreamReader sr = null;
                 string str=string.Empty;
                 dataReader = OKGO.DataAccess.SQLServer.ChannelProvider.Provider.GetAllRoleName();
                         while (dataReader.Read() && dataReader.HasRows)
                         {
        try
        {
            System.Net.WebResponse myTemp = temp.GetResponse();
            sr = new System.IO.StreamReader(myTemp.GetResponseStream(), System.Text.Encoding.GetEncoding("utf-8"));
            str = sr.ReadToEnd();
            System.Xml.XmlDocument xmldoc = new System.Xml.XmlDocument();
            xmldoc.LoadXml(str);
            System.Xml.XmlNode nodes = xmldoc.SelectSingleNode("Result");
            if (Rolename == "")
                continue;

            OKGO.DataAccess.SQLServer.ChannelProvider.Provider.GetUpdateRoleName(int.Parse(dataReader["UserName"].ToString()), Rolename, RolenameTime);

                           sr.Close();
                           sr.Dispose();
                           sr.Close();
                             }
                             catch (Exception ex)
                             {
                                                           throw ex;
                             }  

                         } 
             }
             catch (Exception exc)
             {
                 if (dataReader != null)
                 {
                     dataReader.Close();
                     dataReader.Dispose();
                 }
                 throw exc;
             }
             finally
             {
                 if (dataReader != null)
                 {
                     dataReader.Close();
                     dataReader.Dispose();
                 }
                 n = 0;
             }

         }
     }

     public static void Start(long a, long b)
     {
         GlobalTimer.Change(a, b);
     }

     public static void Stop()
    {
         GlobalTimer.Change(Timeout.Infinite, Timeout.Infinite);
    }
}

}